4 * Builtin diff command: Analyze two perf.data input files, look up and read
5 * DSOs and symbol information, sort them and produce a diff.
9 #include "util/debug.h"
10 #include "util/event.h"
11 #include "util/hist.h"
12 #include "util/evsel.h"
13 #include "util/evlist.h"
14 #include "util/session.h"
15 #include "util/tool.h"
16 #include "util/sort.h"
17 #include "util/symbol.h"
18 #include "util/util.h"
19 #include "util/data.h"
24 /* Diff command specific HPP columns. */
26 PERF_HPP_DIFF__BASELINE,
27 PERF_HPP_DIFF__PERIOD,
28 PERF_HPP_DIFF__PERIOD_BASELINE,
31 PERF_HPP_DIFF__WEIGHTED_DIFF,
32 PERF_HPP_DIFF__FORMULA,
34 PERF_HPP_DIFF__MAX_INDEX
38 struct perf_hpp_fmt fmt;
45 struct perf_session *session;
46 struct perf_data_file file;
49 struct diff_hpp_fmt fmt[PERF_HPP_DIFF__MAX_INDEX];
52 static struct data__file *data__files;
53 static int data__files_cnt;
55 #define data__for_each_file_start(i, d, s) \
56 for (i = s, d = &data__files[s]; \
57 i < data__files_cnt; \
58 i++, d = &data__files[i])
60 #define data__for_each_file(i, d) data__for_each_file_start(i, d, 0)
61 #define data__for_each_file_new(i, d) data__for_each_file_start(i, d, 1)
64 static bool show_period;
65 static bool show_formula;
66 static bool show_baseline_only;
67 static unsigned int sort_compute;
69 static s64 compute_wdiff_w1;
70 static s64 compute_wdiff_w2;
75 COMPUTE_WEIGHTED_DIFF,
79 const char *compute_names[COMPUTE_MAX] = {
80 [COMPUTE_DELTA] = "delta",
81 [COMPUTE_RATIO] = "ratio",
82 [COMPUTE_WEIGHTED_DIFF] = "wdiff",
87 static int compute_2_hpp[COMPUTE_MAX] = {
88 [COMPUTE_DELTA] = PERF_HPP_DIFF__DELTA,
89 [COMPUTE_RATIO] = PERF_HPP_DIFF__RATIO,
90 [COMPUTE_WEIGHTED_DIFF] = PERF_HPP_DIFF__WEIGHTED_DIFF,
93 #define MAX_COL_WIDTH 70
95 static struct header_column {
98 } columns[PERF_HPP_DIFF__MAX_INDEX] = {
99 [PERF_HPP_DIFF__BASELINE] = {
102 [PERF_HPP_DIFF__PERIOD] = {
106 [PERF_HPP_DIFF__PERIOD_BASELINE] = {
107 .name = "Base period",
110 [PERF_HPP_DIFF__DELTA] = {
114 [PERF_HPP_DIFF__RATIO] = {
118 [PERF_HPP_DIFF__WEIGHTED_DIFF] = {
119 .name = "Weighted diff",
122 [PERF_HPP_DIFF__FORMULA] = {
124 .width = MAX_COL_WIDTH,
128 static int setup_compute_opt_wdiff(char *opt)
138 w2_str = strchr(opt, ',');
146 compute_wdiff_w1 = strtol(w1_str, NULL, 10);
147 compute_wdiff_w2 = strtol(w2_str, NULL, 10);
149 if (!compute_wdiff_w1 || !compute_wdiff_w2)
152 pr_debug("compute wdiff w1(%" PRId64 ") w2(%" PRId64 ")\n",
153 compute_wdiff_w1, compute_wdiff_w2);
159 pr_err("Failed: wrong weight data, use 'wdiff:w1,w2'\n");
164 static int setup_compute_opt(char *opt)
166 if (compute == COMPUTE_WEIGHTED_DIFF)
167 return setup_compute_opt_wdiff(opt);
170 pr_err("Failed: extra option specified '%s'", opt);
177 static int setup_compute(const struct option *opt, const char *str,
178 int unset __maybe_unused)
180 int *cp = (int *) opt->value;
181 char *cstr = (char *) str;
191 option = strchr(str, ':');
193 unsigned len = option++ - str;
196 * The str data are not writeable, so we need
197 * to use another buffer.
200 /* No option value is longer. */
201 if (len >= sizeof(buf))
204 strncpy(buf, str, len);
209 for (i = 0; i < COMPUTE_MAX; i++)
210 if (!strcmp(cstr, compute_names[i])) {
212 return setup_compute_opt(option);
215 pr_err("Failed: '%s' is not computation method "
216 "(use 'delta','ratio' or 'wdiff')\n", str);
220 static double period_percent(struct hist_entry *he, u64 period)
222 u64 total = hists__total_period(he->hists);
224 return (period * 100.0) / total;
227 static double compute_delta(struct hist_entry *he, struct hist_entry *pair)
229 double old_percent = period_percent(he, he->stat.period);
230 double new_percent = period_percent(pair, pair->stat.period);
232 pair->diff.period_ratio_delta = new_percent - old_percent;
233 pair->diff.computed = true;
234 return pair->diff.period_ratio_delta;
237 static double compute_ratio(struct hist_entry *he, struct hist_entry *pair)
239 double old_period = he->stat.period ?: 1;
240 double new_period = pair->stat.period;
242 pair->diff.computed = true;
243 pair->diff.period_ratio = new_period / old_period;
244 return pair->diff.period_ratio;
247 static s64 compute_wdiff(struct hist_entry *he, struct hist_entry *pair)
249 u64 old_period = he->stat.period;
250 u64 new_period = pair->stat.period;
252 pair->diff.computed = true;
253 pair->diff.wdiff = new_period * compute_wdiff_w2 -
254 old_period * compute_wdiff_w1;
256 return pair->diff.wdiff;
259 static int formula_delta(struct hist_entry *he, struct hist_entry *pair,
260 char *buf, size_t size)
262 u64 he_total = he->hists->stats.total_period;
263 u64 pair_total = pair->hists->stats.total_period;
265 if (symbol_conf.filter_relative) {
266 he_total = he->hists->stats.total_non_filtered_period;
267 pair_total = pair->hists->stats.total_non_filtered_period;
269 return scnprintf(buf, size,
270 "(%" PRIu64 " * 100 / %" PRIu64 ") - "
271 "(%" PRIu64 " * 100 / %" PRIu64 ")",
272 pair->stat.period, pair_total,
273 he->stat.period, he_total);
276 static int formula_ratio(struct hist_entry *he, struct hist_entry *pair,
277 char *buf, size_t size)
279 double old_period = he->stat.period;
280 double new_period = pair->stat.period;
282 return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period);
285 static int formula_wdiff(struct hist_entry *he, struct hist_entry *pair,
286 char *buf, size_t size)
288 u64 old_period = he->stat.period;
289 u64 new_period = pair->stat.period;
291 return scnprintf(buf, size,
292 "(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")",
293 new_period, compute_wdiff_w2, old_period, compute_wdiff_w1);
296 static int formula_fprintf(struct hist_entry *he, struct hist_entry *pair,
297 char *buf, size_t size)
301 return formula_delta(he, pair, buf, size);
303 return formula_ratio(he, pair, buf, size);
304 case COMPUTE_WEIGHTED_DIFF:
305 return formula_wdiff(he, pair, buf, size);
313 static int hists__add_entry(struct hists *hists,
314 struct addr_location *al, u64 period,
315 u64 weight, u64 transaction)
317 if (__hists__add_entry(hists, al, NULL, NULL, NULL, period, weight,
318 transaction, true) != NULL)
323 static int diff__process_sample_event(struct perf_tool *tool __maybe_unused,
324 union perf_event *event,
325 struct perf_sample *sample,
326 struct perf_evsel *evsel,
327 struct machine *machine)
329 struct addr_location al;
330 struct hists *hists = evsel__hists(evsel);
333 if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
334 pr_warning("problem processing %d event, skipping it.\n",
339 if (hists__add_entry(hists, &al, sample->period,
340 sample->weight, sample->transaction)) {
341 pr_warning("problem incrementing symbol period, skipping event\n");
346 * The total_period is updated here before going to the output
347 * tree since normally only the baseline hists will call
348 * hists__output_resort() and precompute needs the total
349 * period in order to sort entries by percentage delta.
351 hists->stats.total_period += sample->period;
353 hists->stats.total_non_filtered_period += sample->period;
356 addr_location__put(&al);
360 static struct perf_tool tool = {
361 .sample = diff__process_sample_event,
362 .mmap = perf_event__process_mmap,
363 .mmap2 = perf_event__process_mmap2,
364 .comm = perf_event__process_comm,
365 .exit = perf_event__process_exit,
366 .fork = perf_event__process_fork,
367 .lost = perf_event__process_lost,
368 .ordered_events = true,
369 .ordering_requires_timestamps = true,
372 static struct perf_evsel *evsel_match(struct perf_evsel *evsel,
373 struct perf_evlist *evlist)
375 struct perf_evsel *e;
377 evlist__for_each(evlist, e) {
378 if (perf_evsel__match2(evsel, e))
385 static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
387 struct perf_evsel *evsel;
389 evlist__for_each(evlist, evsel) {
390 struct hists *hists = evsel__hists(evsel);
392 hists__collapse_resort(hists, NULL);
396 static struct data__file *fmt_to_data_file(struct perf_hpp_fmt *fmt)
398 struct diff_hpp_fmt *dfmt = container_of(fmt, struct diff_hpp_fmt, fmt);
399 void *ptr = dfmt - dfmt->idx;
400 struct data__file *d = container_of(ptr, struct data__file, fmt);
405 static struct hist_entry*
406 get_pair_data(struct hist_entry *he, struct data__file *d)
408 if (hist_entry__has_pairs(he)) {
409 struct hist_entry *pair;
411 list_for_each_entry(pair, &he->pairs.head, pairs.node)
412 if (pair->hists == d->hists)
419 static struct hist_entry*
420 get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
422 struct data__file *d = fmt_to_data_file(&dfmt->fmt);
424 return get_pair_data(he, d);
427 static void hists__baseline_only(struct hists *hists)
429 struct rb_root *root;
430 struct rb_node *next;
432 if (sort__need_collapse)
433 root = &hists->entries_collapsed;
435 root = hists->entries_in;
437 next = rb_first(root);
438 while (next != NULL) {
439 struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in);
441 next = rb_next(&he->rb_node_in);
442 if (!hist_entry__next_pair(he)) {
443 rb_erase(&he->rb_node_in, root);
444 hist_entry__delete(he);
449 static void hists__precompute(struct hists *hists)
451 struct rb_root *root;
452 struct rb_node *next;
454 if (sort__need_collapse)
455 root = &hists->entries_collapsed;
457 root = hists->entries_in;
459 next = rb_first(root);
460 while (next != NULL) {
461 struct hist_entry *he, *pair;
462 struct data__file *d;
465 he = rb_entry(next, struct hist_entry, rb_node_in);
466 next = rb_next(&he->rb_node_in);
468 data__for_each_file_new(i, d) {
469 pair = get_pair_data(he, d);
475 compute_delta(he, pair);
478 compute_ratio(he, pair);
480 case COMPUTE_WEIGHTED_DIFF:
481 compute_wdiff(he, pair);
490 static int64_t cmp_doubles(double l, double r)
501 __hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
507 double l = left->diff.period_ratio_delta;
508 double r = right->diff.period_ratio_delta;
510 return cmp_doubles(l, r);
514 double l = left->diff.period_ratio;
515 double r = right->diff.period_ratio;
517 return cmp_doubles(l, r);
519 case COMPUTE_WEIGHTED_DIFF:
521 s64 l = left->diff.wdiff;
522 s64 r = right->diff.wdiff;
534 hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
537 bool pairs_left = hist_entry__has_pairs(left);
538 bool pairs_right = hist_entry__has_pairs(right);
539 struct hist_entry *p_right, *p_left;
541 if (!pairs_left && !pairs_right)
544 if (!pairs_left || !pairs_right)
545 return pairs_left ? -1 : 1;
547 p_left = get_pair_data(left, &data__files[sort_idx]);
548 p_right = get_pair_data(right, &data__files[sort_idx]);
550 if (!p_left && !p_right)
553 if (!p_left || !p_right)
554 return p_left ? -1 : 1;
557 * We have 2 entries of same kind, let's
558 * make the data comparison.
560 return __hist_entry__cmp_compute(p_left, p_right, c);
564 hist_entry__cmp_compute_idx(struct hist_entry *left, struct hist_entry *right,
567 struct hist_entry *p_right, *p_left;
569 p_left = get_pair_data(left, &data__files[sort_idx]);
570 p_right = get_pair_data(right, &data__files[sort_idx]);
572 if (!p_left && !p_right)
575 if (!p_left || !p_right)
576 return p_left ? -1 : 1;
578 if (c != COMPUTE_DELTA) {
580 * The delta can be computed without the baseline, but
581 * others are not. Put those entries which have no
584 if (left->dummy && right->dummy)
587 if (left->dummy || right->dummy)
588 return left->dummy ? 1 : -1;
591 return __hist_entry__cmp_compute(p_left, p_right, c);
595 hist_entry__cmp_nop(struct perf_hpp_fmt *fmt __maybe_unused,
596 struct hist_entry *left __maybe_unused,
597 struct hist_entry *right __maybe_unused)
603 hist_entry__cmp_baseline(struct perf_hpp_fmt *fmt __maybe_unused,
604 struct hist_entry *left, struct hist_entry *right)
606 if (left->stat.period == right->stat.period)
608 return left->stat.period > right->stat.period ? 1 : -1;
612 hist_entry__cmp_delta(struct perf_hpp_fmt *fmt,
613 struct hist_entry *left, struct hist_entry *right)
615 struct data__file *d = fmt_to_data_file(fmt);
617 return hist_entry__cmp_compute(right, left, COMPUTE_DELTA, d->idx);
621 hist_entry__cmp_ratio(struct perf_hpp_fmt *fmt,
622 struct hist_entry *left, struct hist_entry *right)
624 struct data__file *d = fmt_to_data_file(fmt);
626 return hist_entry__cmp_compute(right, left, COMPUTE_RATIO, d->idx);
630 hist_entry__cmp_wdiff(struct perf_hpp_fmt *fmt,
631 struct hist_entry *left, struct hist_entry *right)
633 struct data__file *d = fmt_to_data_file(fmt);
635 return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF, d->idx);
639 hist_entry__cmp_delta_idx(struct perf_hpp_fmt *fmt __maybe_unused,
640 struct hist_entry *left, struct hist_entry *right)
642 return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA,
647 hist_entry__cmp_ratio_idx(struct perf_hpp_fmt *fmt __maybe_unused,
648 struct hist_entry *left, struct hist_entry *right)
650 return hist_entry__cmp_compute_idx(right, left, COMPUTE_RATIO,
655 hist_entry__cmp_wdiff_idx(struct perf_hpp_fmt *fmt __maybe_unused,
656 struct hist_entry *left, struct hist_entry *right)
658 return hist_entry__cmp_compute_idx(right, left, COMPUTE_WEIGHTED_DIFF,
662 static void hists__process(struct hists *hists)
664 if (show_baseline_only)
665 hists__baseline_only(hists);
667 hists__precompute(hists);
668 hists__output_resort(hists, NULL);
670 hists__fprintf(hists, true, 0, 0, 0, stdout);
673 static void data__fprintf(void)
675 struct data__file *d;
678 fprintf(stdout, "# Data files:\n");
680 data__for_each_file(i, d)
681 fprintf(stdout, "# [%d] %s %s\n",
682 d->idx, d->file.path,
683 !d->idx ? "(Baseline)" : "");
685 fprintf(stdout, "#\n");
688 static void data_process(void)
690 struct perf_evlist *evlist_base = data__files[0].session->evlist;
691 struct perf_evsel *evsel_base;
694 evlist__for_each(evlist_base, evsel_base) {
695 struct hists *hists_base = evsel__hists(evsel_base);
696 struct data__file *d;
699 data__for_each_file_new(i, d) {
700 struct perf_evlist *evlist = d->session->evlist;
701 struct perf_evsel *evsel;
704 evsel = evsel_match(evsel_base, evlist);
708 hists = evsel__hists(evsel);
711 hists__match(hists_base, hists);
713 if (!show_baseline_only)
714 hists__link(hists_base, hists);
717 fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
718 perf_evsel__name(evsel_base));
722 if (verbose || data__files_cnt > 2)
725 /* Don't sort callchain for perf diff */
726 perf_evsel__reset_sample_bit(evsel_base, CALLCHAIN);
728 hists__process(hists_base);
732 static void data__free(struct data__file *d)
736 for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) {
737 struct diff_hpp_fmt *fmt = &d->fmt[col];
743 static int __cmd_diff(void)
745 struct data__file *d;
746 int ret = -EINVAL, i;
748 data__for_each_file(i, d) {
749 d->session = perf_session__new(&d->file, false, &tool);
751 pr_err("Failed to open %s\n", d->file.path);
756 ret = perf_session__process_events(d->session);
758 pr_err("Failed to process %s\n", d->file.path);
762 perf_evlist__collapse_resort(d->session->evlist);
768 data__for_each_file(i, d) {
770 perf_session__delete(d->session);
779 static const char * const diff_usage[] = {
780 "perf diff [<options>] [old_file] [new_file]",
784 static const struct option options[] = {
785 OPT_INCR('v', "verbose", &verbose,
786 "be more verbose (show symbol address, etc)"),
787 OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
788 "Show only items with match in baseline"),
789 OPT_CALLBACK('c', "compute", &compute,
790 "delta,ratio,wdiff:w1,w2 (default delta)",
791 "Entries differential computation selection",
793 OPT_BOOLEAN('p', "period", &show_period,
794 "Show period values."),
795 OPT_BOOLEAN('F', "formula", &show_formula,
797 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
798 "dump raw trace in ASCII"),
799 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
800 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
801 "file", "kallsyms pathname"),
802 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
803 "load module symbols - WARNING: use only with -k and LIVE kernel"),
804 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
805 "only consider symbols in these dsos"),
806 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
807 "only consider symbols in these comms"),
808 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
809 "only consider these symbols"),
810 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
811 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
812 " Please refer the man page for the complete list."),
813 OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
814 "separator for columns, no spaces will be added between "
815 "columns '.' is reserved."),
816 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
817 "Look for files with symbols relative to this directory"),
818 OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."),
819 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
820 "How to display percentage of filtered entries", parse_filter_percentage),
824 static double baseline_percent(struct hist_entry *he)
826 u64 total = hists__total_period(he->hists);
828 return 100.0 * he->stat.period / total;
831 static int hpp__color_baseline(struct perf_hpp_fmt *fmt,
832 struct perf_hpp *hpp, struct hist_entry *he)
834 struct diff_hpp_fmt *dfmt =
835 container_of(fmt, struct diff_hpp_fmt, fmt);
836 double percent = baseline_percent(he);
840 scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1);
841 return percent_color_snprintf(hpp->buf, hpp->size,
844 return scnprintf(hpp->buf, hpp->size, "%*s",
845 dfmt->header_width, pfmt);
848 static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size)
850 double percent = baseline_percent(he);
851 const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
855 ret = scnprintf(buf, size, fmt, percent);
860 static int __hpp__color_compare(struct perf_hpp_fmt *fmt,
861 struct perf_hpp *hpp, struct hist_entry *he,
862 int comparison_method)
864 struct diff_hpp_fmt *dfmt =
865 container_of(fmt, struct diff_hpp_fmt, fmt);
866 struct hist_entry *pair = get_pair_fmt(he, dfmt);
874 switch (comparison_method) {
876 if (pair->diff.computed)
877 diff = pair->diff.period_ratio_delta;
879 diff = compute_delta(he, pair);
881 scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1);
882 return percent_color_snprintf(hpp->buf, hpp->size,
887 if (pair->diff.computed)
888 diff = pair->diff.period_ratio;
890 diff = compute_ratio(he, pair);
892 scnprintf(pfmt, 20, "%%%d.6f", dfmt->header_width);
893 return value_color_snprintf(hpp->buf, hpp->size,
895 case COMPUTE_WEIGHTED_DIFF:
898 if (pair->diff.computed)
899 wdiff = pair->diff.wdiff;
901 wdiff = compute_wdiff(he, pair);
903 scnprintf(pfmt, 20, "%%14ld", dfmt->header_width);
904 return color_snprintf(hpp->buf, hpp->size,
905 get_percent_color(wdiff),
911 return scnprintf(hpp->buf, hpp->size, "%*s",
912 dfmt->header_width, "N/A");
914 return scnprintf(hpp->buf, hpp->size, "%*s",
915 dfmt->header_width, pfmt);
918 static int hpp__color_delta(struct perf_hpp_fmt *fmt,
919 struct perf_hpp *hpp, struct hist_entry *he)
921 return __hpp__color_compare(fmt, hpp, he, COMPUTE_DELTA);
924 static int hpp__color_ratio(struct perf_hpp_fmt *fmt,
925 struct perf_hpp *hpp, struct hist_entry *he)
927 return __hpp__color_compare(fmt, hpp, he, COMPUTE_RATIO);
930 static int hpp__color_wdiff(struct perf_hpp_fmt *fmt,
931 struct perf_hpp *hpp, struct hist_entry *he)
933 return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF);
937 hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
940 case PERF_HPP_DIFF__PERIOD_BASELINE:
941 scnprintf(buf, size, "%" PRIu64, he->stat.period);
950 hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair,
951 int idx, char *buf, size_t size)
958 case PERF_HPP_DIFF__DELTA:
959 if (pair->diff.computed)
960 diff = pair->diff.period_ratio_delta;
962 diff = compute_delta(he, pair);
964 scnprintf(buf, size, "%+4.2F%%", diff);
967 case PERF_HPP_DIFF__RATIO:
968 /* No point for ratio number if we are dummy.. */
970 scnprintf(buf, size, "N/A");
974 if (pair->diff.computed)
975 ratio = pair->diff.period_ratio;
977 ratio = compute_ratio(he, pair);
980 scnprintf(buf, size, "%14.6F", ratio);
983 case PERF_HPP_DIFF__WEIGHTED_DIFF:
984 /* No point for wdiff number if we are dummy.. */
986 scnprintf(buf, size, "N/A");
990 if (pair->diff.computed)
991 wdiff = pair->diff.wdiff;
993 wdiff = compute_wdiff(he, pair);
996 scnprintf(buf, size, "%14ld", wdiff);
999 case PERF_HPP_DIFF__FORMULA:
1000 formula_fprintf(he, pair, buf, size);
1003 case PERF_HPP_DIFF__PERIOD:
1004 scnprintf(buf, size, "%" PRIu64, pair->stat.period);
1013 __hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt,
1014 char *buf, size_t size)
1016 struct hist_entry *pair = get_pair_fmt(he, dfmt);
1017 int idx = dfmt->idx;
1019 /* baseline is special */
1020 if (idx == PERF_HPP_DIFF__BASELINE)
1021 hpp__entry_baseline(he, buf, size);
1024 hpp__entry_pair(he, pair, idx, buf, size);
1026 hpp__entry_unpair(he, idx, buf, size);
1030 static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp,
1031 struct hist_entry *he)
1033 struct diff_hpp_fmt *dfmt =
1034 container_of(_fmt, struct diff_hpp_fmt, fmt);
1035 char buf[MAX_COL_WIDTH] = " ";
1037 __hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH);
1039 if (symbol_conf.field_sep)
1040 return scnprintf(hpp->buf, hpp->size, "%s", buf);
1042 return scnprintf(hpp->buf, hpp->size, "%*s",
1043 dfmt->header_width, buf);
1046 static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1047 struct perf_evsel *evsel __maybe_unused)
1049 struct diff_hpp_fmt *dfmt =
1050 container_of(fmt, struct diff_hpp_fmt, fmt);
1052 BUG_ON(!dfmt->header);
1053 return scnprintf(hpp->buf, hpp->size, dfmt->header);
1056 static int hpp__width(struct perf_hpp_fmt *fmt,
1057 struct perf_hpp *hpp __maybe_unused,
1058 struct perf_evsel *evsel __maybe_unused)
1060 struct diff_hpp_fmt *dfmt =
1061 container_of(fmt, struct diff_hpp_fmt, fmt);
1063 BUG_ON(dfmt->header_width <= 0);
1064 return dfmt->header_width;
1067 static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt)
1069 #define MAX_HEADER_NAME 100
1070 char buf_indent[MAX_HEADER_NAME];
1071 char buf[MAX_HEADER_NAME];
1072 const char *header = NULL;
1075 BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX);
1076 header = columns[dfmt->idx].name;
1077 width = columns[dfmt->idx].width;
1079 /* Only our defined HPP fmts should appear here. */
1082 if (data__files_cnt > 2)
1083 scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx);
1085 #define NAME (data__files_cnt > 2 ? buf : header)
1086 dfmt->header_width = width;
1087 width = (int) strlen(NAME);
1088 if (dfmt->header_width < width)
1089 dfmt->header_width = width;
1091 scnprintf(buf_indent, MAX_HEADER_NAME, "%*s",
1092 dfmt->header_width, NAME);
1094 dfmt->header = strdup(buf_indent);
1095 #undef MAX_HEADER_NAME
1099 static void data__hpp_register(struct data__file *d, int idx)
1101 struct diff_hpp_fmt *dfmt = &d->fmt[idx];
1102 struct perf_hpp_fmt *fmt = &dfmt->fmt;
1106 fmt->header = hpp__header;
1107 fmt->width = hpp__width;
1108 fmt->entry = hpp__entry_global;
1109 fmt->cmp = hist_entry__cmp_nop;
1110 fmt->collapse = hist_entry__cmp_nop;
1112 /* TODO more colors */
1114 case PERF_HPP_DIFF__BASELINE:
1115 fmt->color = hpp__color_baseline;
1116 fmt->sort = hist_entry__cmp_baseline;
1118 case PERF_HPP_DIFF__DELTA:
1119 fmt->color = hpp__color_delta;
1120 fmt->sort = hist_entry__cmp_delta;
1122 case PERF_HPP_DIFF__RATIO:
1123 fmt->color = hpp__color_ratio;
1124 fmt->sort = hist_entry__cmp_ratio;
1126 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1127 fmt->color = hpp__color_wdiff;
1128 fmt->sort = hist_entry__cmp_wdiff;
1131 fmt->sort = hist_entry__cmp_nop;
1135 init_header(d, dfmt);
1136 perf_hpp__column_register(fmt);
1137 perf_hpp__register_sort_field(fmt);
1140 static int ui_init(void)
1142 struct data__file *d;
1143 struct perf_hpp_fmt *fmt;
1146 data__for_each_file(i, d) {
1149 * Baseline or compute realted columns:
1151 * PERF_HPP_DIFF__BASELINE
1152 * PERF_HPP_DIFF__DELTA
1153 * PERF_HPP_DIFF__RATIO
1154 * PERF_HPP_DIFF__WEIGHTED_DIFF
1156 data__hpp_register(d, i ? compute_2_hpp[compute] :
1157 PERF_HPP_DIFF__BASELINE);
1162 * PERF_HPP_DIFF__FORMULA
1163 * PERF_HPP_DIFF__PERIOD
1164 * PERF_HPP_DIFF__PERIOD_BASELINE
1166 if (show_formula && i)
1167 data__hpp_register(d, PERF_HPP_DIFF__FORMULA);
1170 data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD :
1171 PERF_HPP_DIFF__PERIOD_BASELINE);
1178 * Prepend an fmt to sort on columns at 'sort_compute' first.
1179 * This fmt is added only to the sort list but not to the
1180 * output fields list.
1182 * Note that this column (data) can be compared twice - one
1183 * for this 'sort_compute' fmt and another for the normal
1184 * diff_hpp_fmt. But it shouldn't a problem as most entries
1185 * will be sorted out by first try or baseline and comparing
1186 * is not a costly operation.
1188 fmt = zalloc(sizeof(*fmt));
1190 pr_err("Memory allocation failed\n");
1194 fmt->cmp = hist_entry__cmp_nop;
1195 fmt->collapse = hist_entry__cmp_nop;
1199 fmt->sort = hist_entry__cmp_delta_idx;
1202 fmt->sort = hist_entry__cmp_ratio_idx;
1204 case COMPUTE_WEIGHTED_DIFF:
1205 fmt->sort = hist_entry__cmp_wdiff_idx;
1211 list_add(&fmt->sort_list, &perf_hpp__sort_list);
1215 static int data_init(int argc, const char **argv)
1217 struct data__file *d;
1218 static const char *defaults[] = {
1222 bool use_default = true;
1225 data__files_cnt = 2;
1229 defaults[1] = argv[0];
1231 data__files_cnt = argc;
1232 use_default = false;
1234 } else if (perf_guest) {
1235 defaults[0] = "perf.data.host";
1236 defaults[1] = "perf.data.guest";
1239 if (sort_compute >= (unsigned int) data__files_cnt) {
1240 pr_err("Order option out of limit.\n");
1244 data__files = zalloc(sizeof(*data__files) * data__files_cnt);
1248 data__for_each_file(i, d) {
1249 struct perf_data_file *file = &d->file;
1251 file->path = use_default ? defaults[i] : argv[i];
1252 file->mode = PERF_DATA_MODE_READ,
1253 file->force = force,
1261 int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
1263 int ret = hists__init();
1268 perf_config(perf_default_config, NULL);
1270 argc = parse_options(argc, argv, options, diff_usage, 0);
1272 if (symbol__init(NULL) < 0)
1275 if (data_init(argc, argv) < 0)
1281 sort__mode = SORT_MODE__DIFF;
1283 if (setup_sorting() < 0)
1284 usage_with_options(diff_usage, options);
1288 sort__setup_elide(NULL);
1290 return __cmd_diff();